I-Presbyopia

I-Presbyopia yimeko apho ilensi yeliso liphulukana namandla alo okujonga. Oku kwenza ukuba kube nzima ukubona izinto kufutshane.

Iilensi zeliso kufuneka zitshintshe imilo ukuze zijolise kwizinto ezikufutshane. Ukukwazi kwelensi ukutshintsha imilo kungenxa yokuthamba kwelensi. Olu luthando luyehla kancinci njengoko abantu bekhula. Isiphumo kukulahleka kancinci kwisakhono seliso lokujonga izinto ezikufuphi.

Abantu bahlala beqala ukuyibona imeko xa bekwiminyaka engama-45, xa beqonda ukuba kufuneka babambe izixhobo zokufunda kude ukuze bajolise kuzo. I-Presbyopia yinxalenye yendalo yenkqubo yokuguga kwaye ichaphazela wonke umntu.

Iimpawu zibandakanya:

• Ukwehla kokujolisa kubuchule bezinto ezikufutshane
• Ubume bamehlo
• Intloko ebuhlungu

Umboneleli wezempilo uya kwenza uvavanyo lwamehlo ngokubanzi. Oku kuyakubandakanya imilinganiselo yokufumanisa amayeza eiglasi okanye iilensi zonxibelelwano.

Uvavanyo lunokubandakanya:

• Uviwo lwe-retina
• Uvavanyo lwemfezeko yemisipha
• Uvavanyo lokurhoxisa
• Uvavanyo lwesibane seSlit
• Ubunzima bokubonakalayo

Akukho lunyango lwe-presbyopia. Kwi-presbyopia yasekuqaleni, unokufumanisa ukuba ukubamba izixhobo zokufunda kude okanye ukusebenzisa ukushicilela okukhulu okanye ukukhanya okungaphezulu kokufunda kunokwanela. Njengoko i-presbyopia iya isiba mandundu, uzakufuna iiglasi okanye iilensi zonxibelelwano ukuze ufunde. Ngamanye amaxesha ukongeza ii-bifocals kwi-lens esele ikho sisisombululo esisiso. Iiglasi zokufunda okanye i-bifocal prescription iya kufuneka yomelezwe njengoko usiba mdala kwaye uphulukana nobuchule bokujonga kufutshane.

Ngeminyaka engama-65, uninzi lwelensi ye-elasticity ilahlekile ukuze amayeza okufunda iiglasi angaqhubeki esomelela.

Abantu abangazifuniyo iiglasi ukuze babone umgama banokufuna kuphela iiglasi ezinesiqingatha okanye iiglasi zokufunda.

Abantu ababona kufutshane banokukwazi ukuthatha iiglasi zabo zomgama ukuze bafunde.

Ngokusebenzisa iilensi zonxibelelwano, abanye abantu bakhetha ukulungisa iliso elinye ngombono okufutshane kunye neliso elinye ngombono okude. Oku kubizwa ngokuba yi "monovision." Obu buchule bushenxisa isidingo se-bifocals okanye iiglasi zokufunda, kodwa inokuchaphazela ukuqonda okunzulu.

Ngamanye amaxesha, ukubekwa kweliso kwiliso kunokuveliswa ngokulungiswa kombono we-laser. Kukwakho neelensi zoqhakamshelwano lwe-bifocal ezinokulungisa kuzo zombini umbono okufuphi nakude emehlweni omabini.

Iinkqubo ezintsha zotyando ziyavavanywa ezinokubonelela ngezisombululo kubantu abangafuni ukunxiba iiglasi okanye abafowunelwa. Iinkqubo ezimbini ezithembisayo zibandakanya ukumiliselwa kwelensi okanye inwebu yepinki kwi-cornea. Ezi zinto zihlala zinokubuyiselwa umva, ukuba kukho imfuneko.

Kukho iindidi ezimbini ezintsha zamehlo ezantsi kuphuhliso ezinokuthi zikwazi ukunceda abantu abane-presbyopia.

• Uhlobo olunye lwenza ukuba umfundi abe mncinci, nto leyo eyonyusa ubunzulu bokugxila, ngokufana nekhamera yesikhonkwane. Impazamo yala matontsi kukuba izinto zibonakala zinciphile kancinci. Kwakhona, amathontsi ayaphela ngenxa yemini, kwaye unokuba nexesha elinzima lokubona xa usiya ekukhanyeni okuqaqambileyo uye emnyama.
• Olunye uhlobo lwamaconsi lusebenza ngokuthambisa iilensi zendalo, eziba zi-inflexible kwi-presbyopia. Oku kuvumela ilensi ukuba itshintshe imilo njengokuba yayinjalo xa wawusemncinci. Iziphumo zexesha elide zala mathontsi aziwa.

Abantu abenza utyando lwamehlo banokukhetha ukuba nohlobo olukhethekileyo lokufakwa kwelensi evumela ukuba babone ngokucacileyo kumgama nakufutshane.

Umbono unokulungiswa ngeglasi okanye iilensi zonxibelelwano.

Umbono wobunzima oba mandundu ngokuhamba kwexesha kwaye ungalungiswa ungadala iingxaki ngokuqhuba, indlela yokuphila, okanye umsebenzi.

Shayela umnikezeli wakho okanye i-ophthalmologist ukuba unamehlo okanye unenkathazo yokugxila kwizinto ezikufutshane.

Akukho sithintelo siqinisekisiweyo se-presbyopia.

• I-Presbyopia

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UDonahue SP, uLongmuir RA. I-Presbyopia kunye nelahleko yendawo yokuhlala. Ku: Yanoff M, Duker JS, ii-eds. Ophthalmology. Umhla we-5. IPhiladelphia, PA: Elsevier; 2019: isahl 9.21.

UFragoso VV, uAlio JL. Ukulungiswa kotyando lwe-presbyopia. Ku: Yanoff M, Duker JS, ii-eds. Ophthalmology. Umhla we-5. IPhiladelphia, PA: Elsevier; I-2019: isahluko 3.10.

ICwecwe leReilly, iWaring WELL. Ukuthathwa kwezigqibo kutyando lokuphinda ubambe. Ku: Mannis MJ, Holland EJ, ii-eds. ICornea. Ngomhla we-4. IPhiladelphia, PA: Elsevier; Ngo-2017: isahluko 161.